My wallet version 0.5.0 is in sync now, with 2 active connections.
If trying command "addnode", I get the answer "Method not found (code -32601)". command "help" does not list a command "addnode".
My wallet has no coin control, it's important to me. As I remind, wallet version 0.6.0, that I tried before, had coin control.
addnode 92.193.111.192:48574 add for instance
You can try with two wallets on the same PC. One 0.5, and the second 0.6. Once you want to use 0.6, send coins from 0.5 to 0.6. To do that one client run normal, another one make a folder Slimcoin/Data. In the root of Slimcoin folder place 0.6 qt client and .bat file.
.bat file you can create by opening txt file and type in it
slimcoin-qt.exe -datadir=Data and save it as bat. Make sure in the Data folder to change rpcport in the .config, different than one you have in appdata/roaming/slimcoin, for instance rpcport=41469